This contains two fixes of compiling. The KernelShark one is to inherit libdir into kernelshark CMakeLists so that the libdir parsed to Makefile is honored in kernelshark. The trace-cmd one is to remove python-gui which depends on the obsoleted gtk stuff. In order to compile and test this change, the following patch from Tzvetomir need to be applied. [PATCH] kernel-shark: Fix search path for libtracefs https://lore.kernel.org/linux-trace-devel/20200205070743.13836-1-tz.stoyanov@xxxxxxxxx/T/#u Note: I always send email and git commits with signature "Zamir SUN" before. However I see DCO requires to sign using real name, so I changed to fulfill the DCO.